Stone-surfacing apparatus



Seph M w24. n 35mg@ v H. E. x-:DGiNGTQN STONE SURFACING APPARATUS FilacMarch V, 1921 CIK Las;

IAWY E- GINGeTJQN. OF .massima itiinisiiessencn er iiE-alr die ALBERT C.TANNER, OCE' KANKAKEE, ILLINOIS.

Apis-iic'iioii anni March 7, 192i, siii no. fiscala.

To aZZ whom it may concern.' y f Be it known that I, AE; Encina- 'rom avcitizen yof the United States, and a reside-itof Kankakemin the countyof Kanf kakeevand State of Illinois,`mhave invented certain new anduseful Imljroveinents in Stone-Surfacing Apparatus', Vofnwhich thefollowing is a full, clear, and exact specification. y y l ,y ,y

My invention is concerned with stone surfacing tools, and similardevices, where a pneumatic hammer is employedy andV in its operationproduces dust and clippings of any character that A,can be .movedpneumatically, and it consists' mainly iii a novel combination ofelements wherein a funnel or nozzle is placed adjacent where the tool isworking and is connected by a pipe with an exhaust pipe from the hammerso that the exhaust from the cylinder will create a suction in the tubeleading from the nozzle to draw the dust into the nozzle, through itspipe and into a discharge pipe through which the exhaust escapescarrying the dust with it to a point where it cannot harm the workman.

To illustrate my invention, I annex hereto a sheet of drawings in whichthe same reference characters are used to designate identical parts inall the figures, of which- Fig. l is a side elevation of an apparatusembodying my invention;

Fig. 2 is an enlarged perspective view of a nozzle which I employ inconnection with the apparatus; and 4 Fig. 3 is a detail in section online 3--3 of Fig. l.

In carrying out my invention, I have shown it as applied to a pneumaticsurfacing tool a having the customary supporting rollers 77 and guiderollers c co-operating with the track rail Z adjustably secured on thevertical standard e by any desired means. The cylinder of the pneumatichammer is provided with the customary air supply pipe f and with anexhaust pipe g extending from the exhaust port of the hammer, as seen,and terminating in the dust discharging pipe 71 which preferably extendsout through a window and is guided by the roller c mounted on the frameof the rail CZ, as seen in Fig. 3. The end of the pipe ZL is providedwith a T y', the horizontal ends of which are connected to the pipes Ztand g and the lower end of which is connected to the `flexible tuhe it,which has its lower end connected tol the nozzle Z, which, as seen, hasthe flaring end with the opening widened at the center las seenin Fig.2. To support this nozzle at the proper elevation relative to the endofthe reciprocating tool ym, I preferably` form a boss n on the uppersurface thereof/in which boss is secured the rod @which extends upthrough an aperture in theflange secured on the head of the cylinder ofthe hammer, where itis held in placeby the thumb nut gi, as shovvn. yThetool kprovided with' ay suitable washer r which prevents the dustbeingblown away frdiri the nozzle Z by 'any downward leakage of thecompressed air from the cylinder.

The operation of the device will be readily apparent:

As the tool fm, reciprocates under ,the strokes of the piston s in thecylinder, the exhaust from the cylinder is shot out through the pipe Qinto the pipe ZL, creating a suction therethrough which draws the airwith the dust from the tool into the nozzle Z, up through the pipe k andout through the pipeh in a manner which will be readily understood. Ihave found that with my apparatus, substantially all of the dust fromthe tool can be removed, thus making it very desirable in the protectionafforded to the operator.

While I have shown and described my invention in the form which I atpresent consider best adapted to carry out its purposes, it will beunderstood that it is capable of modications and that I do not desire tobe limited in the interpretation of the following claims except as maybe necessitated by the state of the prior art.

What I claim as new and desire to secure by Letters Patentof the UnitedStates is:

1. In an apparatus operated by compressed gas, the combination with anengine cylinder having an exhaust pipe leading therefrom, of a piston inthe cylinder, a tool operated by the piston, a suction nozzle adjacentthe working end of the tool and in use freely open to the air, aflexible pipe leading from the nozzle into which the exhaust pipe opensto create a draft therethrough, suckingair into the nozzle andadjustable means for supporting the nozzle.

2. In an apparatus operated by compressed gas, the combination with asupporting frame having a horizontal track har, of an engine cylinderhaving an exhaust pipe leading therefrom and mounted to travel on thetrack bar, a roller on the fra-me, a pipe parallel to the track andresting on the roller and having the exhaust pipe opening through oneend thereof to create a draft therethrough, a piston in the cylinder,- atool operated by the piston, a suction nozzle adjacent the Working endof the tool, and a branch pipe leading from the nozzle into the parallelpipe and secured to the same, and means for supporting the branch pipefrom the engine cylinder.L

l 3. ln an apparatus operated by compressed the combination With asupporting frame having a horizontal track bar, of an engine cylinderhaving an exhaust pipe leading therefrom and mounted to travel on thetrack bar, a roller on the frame, a pipe parallel to the track andresting on create a draft therethrough, a piston in the cylinder, a tooloperated by the piston, a

the roller and having the exhaust pipe opening through one end thereofto suction nozzle adjacent the 'Working end of the tool, a branch pipeleading from the nozzle into the parallel pipe and secured to the Vsame,a rod secured at its lower end to the nozzle and having its threadedupper end extended through an apertured lug on the engine, and a nut onthe rod for the purpose described.

4. ln an apparatus operated by com pressed gas, the combination with anengine cylinder, of a reciprocating tool extending therefrom, means atthe Working end of the tool to collect and carry away the dust formedthereby, and a shield carried by the tool and serving to deflect any airleaking from the cylinder toward the Working end of the tool fromreaching said Working end and scattering the dust.

In Witness whereof, I have hereunto set my hand and afXed my seal, thisfirst day of March A. D. 1921.

HARVEY E. EDGINGTON. [Ls] Vitnesses I V. S. ELLIS, BnuNincu L.KLonU'roHnR.

